I think that part of my earlier attempted point is that the amount that you need likely remains a moving target.  If you feel that you need 4-5 bitcoin today, then that likely would not be a very accurate calculation if you might have ONLY accumulated 1.5 Bitcoin, and so you are quite a ways from the goal, and so if you are thinking that you will be able to accumulate 4-5  bitcoin in the future - like maybe 10-15 years from now, and so far in your bitcoin journey (let's say nearly 3 years), you have ONLY accumulated 1.5 BTC, then it could be quite difficult to reach 4-5 bitcoin in the next 10-ish years.

On the other hand, if you are close to reaching your goal (such as you have already gotten to 3 BTC in the past nearly 3 years), then sure, it may well well be possible to reach 4-5  bitcoin in the next 4-ish years.  Perhaps? perhaps?

I am a little unclear about your proclaiming that you need 4-5 bitcoin, unless you are already close to reaching such staus, yet if you have gotten close to 4 bitcoin and you are not sure whether 4 or 5 bitcoin is enough, then there is quite a bit of difference between 4 bitcoin and 5 bitcoin, unless you are trying to suggest that you need 4.5 Bitcoin, and if you are close to reaching 4 bitcoin, then it could still take you another year or more to accumulate another 0.5 BTC.

In the meantime the quantity of bitcoin needed is going down for certain salary levels.  I would suspect that a quantity of 4.5 bitcoin in 3 years would be able to support an annual salary of right around $40k per year (even accounting for the ongoing expected debasement of the dollar).